<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="stylesheet" href="../css/center-demo.css" />
    <title>Document</title>
    <style>
      .logo {
        background: url("../img/avatar.png") no-repeat center;
        background-size: cover;
        text-indent: -2220px;
        overflow: hidden;
      }
    </style>
  </head>
  <body>
    <h1 class="logo">CSS世界</h1>
    <div class="wp">
      <div class="box size">123123</div>
    </div>
    <div
      class="hideText"
      title="fdsffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
    >
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    </div>
    <div class="bg-img"></div>
  </body>
</html>
